Method of feeding web material.



G. B. STILWELL.

METHOD 0F FEEDING WEB MATERIAL.

APPLIoATIon FILED JUNE 7, 1907.

912,330, Patented Feb.16,19o9.

El I G x Z'Z Zz G i I/E 4G g Gi G O 'da' i l w kisses: l Ive/fron UNITEDsTATEs PATENT oEEIcE.v

CHARLES B. STILWELL, OF WAYNE, PENNSYLVANIA, ASSIGNOR TO UNIONPAPER BAG-MACHINE COMPANY, F PHILADELPHI PENNSYLVANIA.

A, PENNSYLVANIA, A CORPORATION OF mamon or FEEDING' WEB MATERIAL.

Patented Feb. 16, 1909.

Application led'Jime 7, 1907. Serial No. 377,679.

. To all whom it may concern.'

Be it known that I, CHARLES B. STILWELL, a citizen of the United States,residing in Wayne, county of Delaware, State of Pennfollowing is a forma part thereof.A

The present invention relates to the art of U feedingweb material drawnfromrolls.

In connection with many modern high speed, newspaper o r other printingpresses,- -paper bag machines and the like, the paper or other materiallprinted or otherwise worked uponis supplied in the form of a continuousconstantly advancing web drawn v l' from ai roll.

' The object of my invention is to simplify Y and improve the process ofso attaching the outer end of a sparcv roll to the web being drawnfrom-the roll in usethat the supply from *the last mentioned roll'maystop,` as from exhaustion of the roll, Without interfering'with thecontinuous advancement of a. continuous web. n

`Incari-yingout my invention, I rst at- A tach the flap .or outer endofthe spare roll tok 'the' body of the rollv by a'bond strong enough tohold the web in place when the roll is rapidly rotated in the direction.in

. vwhichthe roll tends to unwind. After the .end of the roll is anchoredin place, I'v set the roll in rotation gradually bringing itsAperipheral speed upto a parityv with the speed at which the web-fedfromthe roll -in use travels. I then bring the periphery of therotatingspare roll and the advancing web from the roll in use into contact withvsufficient pressure so thatv 'a bond of suitably'suppliedpaste willbeformed between the end l of the spare roll and the advancing web fromthe other roll which will cause the end ofthe spare 'roll tov bedetached 'from the body of the roll and fed forward by the web from theroll inuse. I attach the two webs before the roll in use is entirelyexhausted and by bringing 'the spare roll up'to speed before attachingit to the web from the roll in use 'I avoid the shock and disruptivestrains which would occur if it were aty tempted to set the'heavy spareroll in rotation with the proper speed at the instant at which the twowebs are connected together.

use or stub roll just back of the point of at- '.Us'ually Iisever theweb from thev roll intachrnent to the other roll at or about the time atwhich the webs from the tworolls lare connectedtogether. I A

vThe-paste for connecting 'the two-'websl maybe applied to the properportions of either or both Webs before the joint, forming Contactoccurs. In practice I prefer to apply the paste toa considerable portionof scribed the construction and operation of one form lof mechanismwhich may advantageously be employedin carrying out my invention. Thesimple but effective-mechanismemployed is new with me and forms thesubject of my application for patent, Serial Number 377,678 filed' ofeven date herewith. Of. the drawings, Figure 1 is an elevation withpartsbroken away of a machine particularly designed for feeding paper vtoprinting presses, paper bag making'machinesorvthe'like. Fig. 2 is a planview, with parts broken away, of the mechanism shown .in Fig. 1 and Fig.3 is a perspective view of a spare roll `prepared for use.

In the drawings, A represents theframework of the -machine, having twoinclined Roll shaft bearing boxes C are mounted on ,the guideways andhavevdepending portions C1 threaded for engagement with the threads onthe feed screws B. The normal position of the roll in use D is at theright hand end ofthe guideways as seen in Fig. l, itssupporting fshaftD1 being journaled in a corresponding pair of boxes C. The initial p0-sition of the spare roll E is at the left hand or upper end of theguideways as seen in Fig. l. Its supporting shaft El is journaled inanother pair of boxes C. The web D2 from the roll inv use is fed fromthe roll D in 'any suitable manner over the guide roll F lcarried'by theframework A.

The spare roll E has its outer flap end lightly attached to the body ofthe roll, as by paste applied at the points E2 shown in Fig. 3. Spacedapart portions Es of the outer surface of the flap end have pasteapplied to them as indicated iii Fig. 3.

When it is desired to connect the flap end of the roll E to the web 4l)being drawn from the roll D, the roll Ey is brought. up to speed bymeans of a driving wheel VGr carried by the shaft journaled in boxes G4"movabiy supported in arms G1 pivoted on shaft Uff and movable'from thedotted line position shown in Fig. 1 to the full line operatingpositionV by an. opei'atiiig handle (is.

ln the operating position, the roll E is engaged between the pasteportions E2 by wheel (Jr which then serves as an idler connecting theroll hi and a friction wheel H, belt driven with a peripheralvelocityequal to the speed at which the web D is advanced. 'lhe wheelthus serves as a frictional driving device for gradually bringing theroll up to the desired speed. When y the friction'wheel G is swung intothe full line position,- the arms J pivoted on the shaft G5 also swingfrom the dotted position into the full line positionvof big. l, beingVmoved by the springs J1. Normally the i -arms J are held down by theweight ofthe roll G and parts carried by it acting through arms G9carried by the'shaft G5 and engag ing the arms J. 'lhe upward movementof the arms J is checked by stop lugs A3 car-- ried by the framework A.v ()iie oI the arms 'J carries at one end of the roll E a trip lever Jfgravitally held in the position shown in Fig. l, except when it ismomentarily moved out of that position once in each rotation of the rollE by the arm E, carried by the roll shaft E1. As the roll E is broughtup to speed the web l)2 drawn from the, roll D over the guide roll F isgraduallyl deflected againstthe periphery of thel roll D by an idlerroll K journaled in arms K1 secured to a shaft 1'2 pivotally mounted onthe frame- Y work and adapted to be swung by a handle 'K3 from thedottedposition in which it is normally held b shaft arm K?. and spring-K5 tothe full line position'of F i'g'.' 1. As the idler rollKapproaches the periphery of the rollv E, a latch or locking device M isactuated as byan arm K ycarried by shaft K2- to release a springactuated striker or severing device. The severing device ycoinl prisesablade L1 carried-by arms L2 secured to ashaft L3 journaled in the frame.

work and valso arigidly connected arm L- A spring L5v extending betweenthe frame- Work and an 'arm L secure'dto the shaft L3 normal gravityheldfposit'iong- -:When the-l latter istripped," however, thearm' Efurges the striker-iii" the cutting direction when the striker isreleased by lits locking devicesi. When the latch M is turned to dis-Iengage the striker, thearm 'Llrst engagesthe trip lever Jtwhen the 4latter is fiiifits.

carried by the roll shaft, the striking blade, under the action of itsspring, swings down and cutsthe tense Vweb DL. A' cooperating blade orpaper support`J`-' isf preferably carried by thearms J. The' downwardmotion ofthe striking blade is arrested by its engagement with the armsJ or stops J? carried thereby.

In the usual method of operation, the idlerv roll K is graduallyswuiigover into proximity with the periphery of the roll E.V Aftertheweb of the roil l) is brought into proximity withthe periphery of theroll E, the operatorpwaits until the'arm E* passes the trip lever J*before bringing the web D2 into contact with the roll l5. immediatelyaiter the arm in* passes the lever J* he forces the web against theperiphery of the roll E and at the samev time the -locklever M istripped. When, thereafter, the rotation of -the roll E brings pasteportionslafinto contact with the web-l): the'iiapend of the roll h;adheres to the web Dt', breaking the bond between the ilapend and thebody of the roll ri. At the pi oper instant the `trip lever J 4 isengaged by the arm and the cutting olf device swings into engagementwith the web.

It will be understood that the arin vla 1s initially set relative 'to.zthe flap end Vof the roll la so that the severing device vworks at theright time. Y

rlaving now described my invention, what I claim as new and desire vtosecure by Letters lf'atent is y Y Y lhe method of attaching the outerend of the web of aspare roll of paper to a'rapidly in use whichconsists in securing vthe outer end of the web of the spare roll to thebody of thevspare roll by a bond easily broken, but of sufficientstrength to hold the end of the web in place when lthe roll israpidlyro.v Vtated about its own axis, applying paste to a considerable portionof the outer surface of said outer end, giving the spare roll a rotativemovement about its own axis such that its eriphery travels withthe samespeedas t e web drawn from the roll in use while saidspare roll .isoutof contact with said advancing web, and then whilersaid spareV rollis s o rotating bringing the periphery of the spare roll and theadvancing web into contact to cause the paste carried by said outer endof the spare roll to adhere to l said advancingweb with suchstrengththat. the pulljof the advancing web will break V.the

roll and cause its webtomo've, forward with 'the web V l l l fWitnesses:. ARNOLD-Kum,

. D. Srnwaim 12o` bond between the web and. bodyof thespare

